@article{DAN_1964_157_5_a13,
     author = {A. L. Shmel'kin},
     title = {Wreath products and varieties of groups},
     journal = {Doklady Akademii Nauk},
     pages = {1063--1065},
     publisher = {mathdoc},
     volume = {157},
     number = {5},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_5_a13/}
}